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1、产品分级（Productgraduation）无公害银可分级主要按其外观、规格大小分级同表1给出Thenon-environmentaldamagesilvermaygrademainlyaccordingtoitsoutwardappearance,specificationsizegradingsametable1gives等级（Rank）一级（First-level）二级（Second-level）三级（Third-level）每千克粒数Eachkilogramnumberofseeds360粒以下below360grains360—440粒以下below360-440grains440粒以上above440grains(银杏果)